Home / 644,784.54-889,796.25-358,298.61

Finding the Fourth Proportional to 644,784.54, 889,796.25 and 358,298.61

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Solution

The fourth proportional to 644,784.54, 889,796.25 and 358,298.61 is: 494,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,784.54 : 889,796.25 = 358,298.61 : x
  2. Step 2: Convert to fraction form
    644,784.54/889,796.25 = 358,298.61/x
  3. Step 3: Cross multiply
    644,784.54x = 889,796.25 × 358,298.61
  4. Step 4: Simplify right side
    644,784.54x = 318,812,759,558.21
  5. Step 5: Solve for x
    x = 318,812,759,558.21/644,784.54
  6. Step 6: Final answer
    x = 494,448.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.